JPH0610656U - Neutral brake device for marine reduction / reversing machine - Google Patents

Neutral brake device for marine reduction / reversing machine

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Publication number
JPH0610656U
JPH0610656U JP5588192U JP5588192U JPH0610656U JP H0610656 U JPH0610656 U JP H0610656U JP 5588192 U JP5588192 U JP 5588192U JP 5588192 U JP5588192 U JP 5588192U JP H0610656 U JPH0610656 U JP H0610656U
Authority
JP
Japan
Prior art keywords
neutral
valve
pressure
brake
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5588192U
Other languages
Japanese (ja)
Inventor
肇 今中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Priority to JP5588192U priority Critical patent/JPH0610656U/en
Publication of JPH0610656U publication Critical patent/JPH0610656U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 中立時に出力軸を制動する中立ブレーキへ作
動油圧を供給するものにおいて、この作動油圧の上昇を
緩やかに行わしめるようにして、出力軸の回転が低下す
る前に中立ブレーキが作動することがなく、これによ
り、中立ブレーキの耐久性を向上させる。 【構成】 中立時に、緩嵌入弁(13)に作用して作動油
圧を昇圧する中立昇圧弁(19)を設けたものにおいて、
その中立昇圧弁(19)へ背圧を絞り(18)を通して供給
する。
(57) [Summary] [Purpose] In the case of supplying the working oil pressure to the neutral brake that brakes the output shaft at neutral, the operating oil pressure is gently increased so that the rotation of the output shaft does not decrease. The neutral brake is not activated, which improves the durability of the neutral brake. [Constitution] In a neutral state, a neutral pressure increasing valve (19) that acts on the loose fitting valve (13) to increase the working hydraulic pressure is provided.
Back pressure is supplied to the neutral booster valve (19) through a throttle (18).

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、舶用減速逆転機の中立ブレーキ装置であって、特に、油圧式の中 立ブレーキを備えたものにおいて、その中立ブレーキへ作動油を供給させるため の油圧回路の構成に関するものである。 The present invention relates to a neutral brake device for a speed reducer / reverser for a ship, and more particularly, to a structure of a hydraulic circuit for supplying hydraulic oil to the neutral brake in a device provided with a hydraulic neutral brake.

【0002】[0002]

【従来の技術】[Prior art]

舶用減速逆転機において、その減速逆転機の中立時に、作動油ポンプからの圧 油をその中立ブレーキへ供給することによって、出力軸の制動を行うようにした ものがある。即ち、油圧クラッチ式の減速逆転機においては、クラッチを中立に しても、そのクラッチ板部分で、入力側に対して出力側が連廻りを生ずることが あり、これを防止するため、出力軸側を制動することが行われている。他方、前 進又は後進クラッチへ作動油を供給する際、その前進クラッチ又は後進クラッチ が急激に嵌入されて嵌入ショックを生ずるのを防止するため、前後進切換弁の切 換えの際に、油圧ポンプからの作動油を徐々に上昇させて、油圧クラッチを緩や かに嵌入させる緩嵌入弁を設けることが行われている。 In some marine reduction / reversing machines, the output shaft is braked by supplying hydraulic oil from a hydraulic oil pump to the neutral brake when the reduction / reversing machine is in neutral. In other words, in a hydraulic clutch type reduction / reverse gear, even if the clutch is neutral, the output side may continuously rotate with respect to the input side at the clutch plate portion. Is being braked. On the other hand, when supplying hydraulic oil to the forward or reverse clutch, in order to prevent the forward clutch or reverse clutch from being suddenly engaged and causing an impact shock, a hydraulic pump is used when switching the forward / reverse selector valve. It has been practiced to provide a loose fitting valve that gradually raises the hydraulic oil from and slowly fits the hydraulic clutch.

【0003】 このような緩嵌入弁は、中立時には作動油圧を低圧に保持し、前後進切換弁が 嵌入側に切換わると、その作動油圧を徐々に上昇させるようにしたものである。 そのため、その作動油圧をブレーキの作動油圧として用いる中立ブレーキにおい ては、作動油圧力が低いため、充分なブレーキ圧を得ることができないという不 都合がある。かかる不都合を解消するため、中立時にもその緩嵌入弁を高圧側に 動作させて、作動油圧を上昇させる中立昇圧弁を設けることが考えられている( 実開平3-81452 号公報参照)。Such a loose fitting valve holds the working oil pressure at a low pressure at the neutral position, and gradually raises the working oil pressure when the forward / reverse switching valve is switched to the fitting side. Therefore, in a neutral brake that uses the operating oil pressure as the operating oil pressure of the brake, the operating oil pressure is low, and it is not possible to obtain a sufficient brake pressure. In order to eliminate this inconvenience, it has been considered to provide a neutral booster valve that raises the working oil pressure by operating the loose fitting valve to the high pressure side even in neutral (see Japanese Utility Model Laid-Open No. 3-81452).

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

上記のような中立昇圧弁を設けることにより、中立時においても作動油圧を上 昇させて中立ブレーキのブレーキ圧を高くし、充分な制動力を得ることが可能と なる。この場合の中立昇圧弁は、前後進切換弁の切換えに応じて、作動油ポンプ からの作動油圧をその中立昇圧弁の背圧部へ供給することとしており、この従来 の中立昇圧弁を設けた油圧回路においては、前後進切換弁を中立へ切換えると直 ちにその背圧部に作動油が供給される構造となっている。このため、中立ブレー キへ供給される作動油圧も直ちに上昇し、特に高速で航走している際に前進又は 後進から中立へ切換えると、プロペラシャフトが高回転で回転した状態から回転 が低下する前の段階で中立ブレーキが働き、中立ブレーキの寿命を短くするとい う不都合があった。上記従来の昇圧弁を設けた中立ブレーキ装置においては、そ の中立ブレーキへの作動油圧の回路中に絞りを設けることによって、あまり急激 に中立ブレーキが作動しないよう考えられているが、かかる絞りを設けたのみで はこのような不都合を充分解消できないという問題があった。 By providing the neutral pressure-increasing valve as described above, it is possible to raise the operating oil pressure and increase the brake pressure of the neutral brake even at the neutral time, and to obtain a sufficient braking force. In this case, the neutral booster valve is designed to supply the hydraulic pressure from the hydraulic pump to the back pressure part of the neutral booster valve in accordance with the switching of the forward / reverse switching valve. In the hydraulic circuit, the hydraulic oil is supplied to the back pressure section immediately after switching the forward / reverse switching valve to neutral. For this reason, the hydraulic pressure supplied to the neutral brake also immediately rises, and if the propeller shaft is rotated at high speed, the rotation will decrease if the propeller shaft is switched from forward or reverse to neutral, especially when traveling at high speed. There was an inconvenience that the neutral brake worked in the previous stage and shortened the life of the neutral brake. In the above-mentioned conventional neutral brake device equipped with a booster valve, it is considered that the neutral brake does not operate abruptly by providing a throttle in the hydraulic pressure circuit for the neutral brake. However, there is a problem in that such inconvenience cannot be sufficiently eliminated only by providing the device.

【0005】 この考案は、このような従来の欠点を解消して、中立時に出力軸を制動する中 立ブレーキへ作動油圧を供給するものにおいて、この作動油圧の上昇を緩やかに 行わしめるようにして、出力軸の回転が低下する前に中立ブレーキが作動するこ とがなく、これにより、中立ブレーキの耐久性を向上させることを目的としてな されたものである。The present invention solves the above drawbacks of the prior art, and supplies the working oil pressure to a neutral brake that brakes the output shaft at the time of neutral, so that the working oil pressure can be gently increased. The purpose of this is to improve the durability of the neutral brake by preventing the neutral brake from operating before the rotation of the output shaft decreases.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

上記の課題を解決するため、この考案では、中立から前進又は後進への切換時 に前進又は後進クラッチへの作動油圧を徐々に上昇させる緩嵌入弁と、中立時に 作動油圧を供給されて出力軸の制動を行う中立ブレーキと、同じく中立への切換 時に作動油を供給されて上記中立ブレーキへ供給される作動油圧を上昇させる中 立昇圧弁とを備えた減速逆転機の油圧回路において、前記中立昇圧弁への作動油 供給路に絞りを設けたことを特徴とする。 In order to solve the above-mentioned problems, in the present invention, a loose fitting valve that gradually increases the working hydraulic pressure to the forward or reverse clutch when switching from neutral to forward or reverse, and the operating oil pressure is supplied to the output shaft when neutral. In the hydraulic circuit of the deceleration / reversing machine, which is provided with a neutral brake that performs braking, and a neutral booster valve that is supplied with hydraulic oil at the time of switching to neutral and increases the hydraulic pressure supplied to the neutral brake, The feature is that a throttle is provided in the hydraulic oil supply path to the booster valve.

【0007】[0007]

【作用】[Action]

上記この考案の構成によれば、中立時に作動油圧を上昇させる中立昇圧弁への 回路中に絞りを設けているので、その昇圧弁に供給される背圧が緩やかに上昇す ることになり、このためにその中立昇圧弁の動作が緩慢に行われ、中立ブレーキ への作動油圧が同様に徐々に上昇し、したがって、この間にプロペラに直結され た出力軸の回転が低下することになる。 According to the configuration of the present invention described above, since the throttle is provided in the circuit to the neutral pressure-increasing valve that increases the working oil pressure at neutral, the back pressure supplied to the pressure-increasing valve is gradually increased. For this reason, the operation of the neutral booster valve is performed slowly, and the hydraulic pressure to the neutral brake likewise gradually increases, so that the rotation of the output shaft directly connected to the propeller decreases during this period.

【0008】[0008]

【実施例】【Example】

図1は、この考案の実施例における減速逆転機の油圧回路図である。図におい て(1)は作動油ポンプであり、この作動油ポンプ(1)の吐出側通路(2)の 途中に、前後進切換弁(3)が設けられている。この前後進切換弁(3)の前進 位置において、作動油ポンプ(1)の作動油を供給される前進作動油通路(4) の途中に、前進一速・二速切換弁(5)が設けられて、前進一速クラッチ(7) と前進二速クラッチ(8)の一方に、選択的に作動油を供給するようにしている 。他方、同じく後進時に作動油が供給される後進作動油通路(6)が、後進クラ ッチ(10)へ接続されている。(9)は、前進一速・二速切換弁(5)の切換え に応じて、前進一速クラッチ(7)又は前進二速クラッチ(8)へ潤滑油を選択 的に供給するようにした、潤滑油切換弁である。 FIG. 1 is a hydraulic circuit diagram of a reduction / reversal machine according to an embodiment of the present invention. In the figure, (1) is a hydraulic oil pump, and a forward / reverse switching valve (3) is provided in the discharge passage (2) of the hydraulic oil pump (1). At the forward position of the forward / reverse switching valve (3), a forward first speed / second speed switching valve (5) is provided in the middle of the forward hydraulic oil passage (4) to which the hydraulic oil of the hydraulic pump (1) is supplied. Accordingly, the hydraulic oil is selectively supplied to one of the forward first speed clutch (7) and the second forward speed clutch (8). On the other hand, a reverse hydraulic oil passage (6), which is also supplied with hydraulic oil during reverse, is connected to the reverse clutch (10). In (9), the lubricating oil is selectively supplied to the forward first speed clutch (7) or the forward second speed clutch (8) according to the switching of the forward first speed / second speed switching valve (5). It is a lubricating oil switching valve.

【0009】 前記作動油ポンプ(1)の吐出側通路(2)の途中には、前後進切換弁(3) よりも上流側において、この吐出側通路(2)の作動油圧を調圧する油圧調整弁 (13)が設けられている。この油圧調整弁(13)には緩嵌入弁(14)が設けられ て、その緩嵌入弁(14)の背面側に圧油が供給されると、この緩嵌入弁(14)に よって油圧調整弁(13)の油圧調整圧を徐々に上昇させ、各油圧クラッチ(7) (8)(10)への作動油圧を徐々に上昇させて、嵌入ショックを防止するように している。そして、この緩嵌入弁(14)の背圧部には、前後進切換弁(3)の中 立位置において、吐出側通路(2)の作動油を供給される緩嵌入弁背圧通路(15 )が接続されて、中立時には、この背圧通路(15)の作動油がドレンに戻されて 緩嵌入弁(14)を図の上側に戻し、油圧調整弁(13)を低圧側に保持させる。他 方、前進又は後進に切換えると、この背圧通路(15)に圧油が立ち、油圧調整弁 (13)をバネ力に抗して下側に押して作動油圧を徐々に上昇させることとされて いる。In the middle of the discharge side passage (2) of the hydraulic oil pump (1), a hydraulic pressure adjustment for adjusting the working hydraulic pressure of the discharge side passage (2) is provided upstream of the forward-reverse switching valve (3). A valve (13) is provided. The oil pressure adjusting valve (13) is provided with a loose fitting inlet valve (14), and when pressure oil is supplied to the back side of the loose fitting inlet valve (14), the oil pressure adjusting valve (14) adjusts the oil pressure. The hydraulic adjustment pressure of the valve (13) is gradually increased, and the operating hydraulic pressure to the hydraulic clutches (7), (8) and (10) is gradually increased to prevent the impact shock. Then, at the neutral position of the forward / reverse switching valve (3), the back pressure portion of the loose fitting inlet valve (14) is supplied with the hydraulic oil of the discharge side passage (2) and the loose fitting inlet back pressure passage (15). ) Is connected and the hydraulic oil in this back pressure passage (15) is returned to the drain when neutral, the loose fitting valve (14) is returned to the upper side in the figure, and the hydraulic pressure adjustment valve (13) is held on the low pressure side. . When switching to the other direction, forward or reverse, pressure oil builds up in this back pressure passage (15) and pushes the hydraulic pressure regulating valve (13) downward against the spring force to gradually raise the operating hydraulic pressure. ing.

【0010】 (16)は、前記油圧クラッチ(7)(8)(10)よりも動力伝達の下手側にお ける出力軸を制動するための油圧式の中立ブレーキであり、この中立ブレーキ( 16)には、同じく前後進切換弁(3)の中立時において、前記吐出側通路(2) の作動油が供給される中立ブレーキ作動油通路(17)が接続されて、中立時に、 この中立ブレーキ(16)へ作動油圧を供給するようにしている。この場合、この 通路(17)の途中に絞り(18)が設けられて、その中立ブレーキ(16)に対して 徐々に作動油圧を供給するようにしている。Reference numeral (16) is a hydraulic neutral brake for braking the output shaft on the lower side of power transmission with respect to the hydraulic clutches (7), (8) and (10). ) Is also connected to a neutral brake hydraulic oil passage (17) to which hydraulic oil in the discharge passage (2) is supplied when the forward / reverse switching valve (3) is neutral. The working oil pressure is supplied to (16). In this case, a throttle (18) is provided in the middle of the passage (17) to gradually supply the working hydraulic pressure to the neutral brake (16).

【0011】 (19)は中立昇圧弁で、上記緩嵌入弁(14)の背面側に配置されて、この緩嵌 入弁(14)を押し込むことによって、即ちその緩嵌入弁(14)に作動油圧が供給 されたと同様に、油圧調整弁(13)の調整油圧を高く設定するものである。そし て、この中立昇圧弁(19)へ背圧を供給するための中立昇圧弁分岐油路(20)が 、前記中立ブレーキ(16)への作動油通路(17)の途中において、その通路(17 )中の絞り(18)よりも下流側に分岐接続されて、この作動油通路(17)の圧油 を、この中立昇圧弁(19)側にも供給するようにしている。Reference numeral (19) is a neutral booster valve which is arranged on the back side of the loose fitting inlet valve (14) and is actuated by pushing the loose fitting inlet valve (14), that is, to the loose fitting inlet valve (14). As in the case where the hydraulic pressure is supplied, the adjusted hydraulic pressure of the hydraulic pressure adjusting valve (13) is set high. The neutral pressure-increasing valve branch oil passage (20) for supplying back pressure to the neutral pressure-increasing valve (19) is provided in the middle of the hydraulic oil passage (17) to the neutral brake (16). It is branched and connected to the downstream side of the throttle (18) in (17) so that the pressure oil in the hydraulic oil passage (17) is also supplied to the neutral booster valve (19) side.

【0012】 この場合、中立昇圧弁(19)には、中立ブレーキ(16)と同じく絞り(18)を 通った作動油が供給されることから、前後進切換弁(3)を中立に切換えた際、 その絞り(18)によって絞られた作動油が中立昇圧弁(17)に供給されるため、 その中立昇圧弁(19)の動作が緩やかに行われる。このために、緩嵌入弁(14) を介して行われる作動油圧の上昇が同様に緩やかとなって、中立ブレーキ(16) に、その中立ブレーキ(16)へ供給される絞り(18)の作用と相まって作動遅れ を生ずることとなる。したがって、前進又は後進から切換弁(3)を中立に切換 えた場合、出力軸即ちプロペラの回転が低下した段階で中立ブレーキ(16)が働 くことになるため、この中立ブレーキ(16)に過大な負荷がかかることなく、そ の中立ブレーキ(16)の耐久性を向上することができるのである。In this case, the neutral booster valve (19) is supplied with hydraulic oil that has passed through the throttle (18) as with the neutral brake (16), so the forward / reverse selector valve (3) was switched to neutral. At this time, since the hydraulic oil throttled by the throttle (18) is supplied to the neutral booster valve (17), the neutral booster valve (19) operates gently. For this reason, the increase in the operating oil pressure performed via the loose fitting valve (14) is also moderated, and the action of the throttle (18) supplied to the neutral brake (16) is exerted on the neutral brake (16). This causes a delay in operation. Therefore, when the switching valve (3) is switched from the forward or reverse to the neutral position, the neutral brake (16) operates at the stage when the output shaft, that is, the propeller rotation has decreased. Therefore, the neutral brake (16) is excessively large. The durability of the neutral brake (16) can be improved without applying a heavy load.

【0013】 図2は、この場合の中立ブレーキ(16)への作動油圧の上昇過程を従来と比較 して示したもので、従来においては、切換弁を中立に切換えると、僅かな遅延時 間をもって作動油圧が急激に上昇するが、この考案では、ブレーキの動作開始ま での遅延時間が大幅に長くなることがわかる。FIG. 2 shows the process of increasing the operating oil pressure to the neutral brake (16) in this case in comparison with the conventional case. In the conventional case, when the switching valve is switched to neutral, a slight delay time is generated. Although the hydraulic pressure rises rapidly with this, it can be seen that in this invention, the delay time until the start of brake operation is significantly increased.

【0014】[0014]

【考案の効果】[Effect of device]

以上のように、この考案によれば、中立時に中立ブレーキに供給される作動油 圧を上昇させるための昇圧弁を設けたものにおいて、この昇圧弁を動作させる作 動油の供給回路中に絞りを設けていることから、その中立昇圧弁の動作が緩慢に 行われることとなって、中立ブレーキのブレーキ作動開始までの時間が長くなり 、この遅延時間により、その中立ブレーキによって制動される出力軸側の回転数 が低下することから、中立ブレーキの耐久性を向上できるという効果がある。ま た、このように中立ブレーキの耐久性を向上できることから、ブレーキを大型の ものにする必要がなく、全体を小型化できる。 As described above, according to the present invention, in the case where the booster valve for increasing the hydraulic oil pressure supplied to the neutral brake at the time of neutral is provided, the throttle is provided in the working oil supply circuit for operating this booster valve. Since the neutral booster valve is operated slowly, the time until the brake operation of the neutral brake starts becomes longer, and this delay time causes the output shaft to be braked by the neutral brake. Since the rotation speed on the side decreases, the durability of the neutral brake can be improved. Moreover, since the durability of the neutral brake can be improved in this way, it is not necessary to make the brake large, and the overall size can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】この考案の実施例を示す減速逆転機の油圧回路
図である。
FIG. 1 is a hydraulic circuit diagram of a speed reducer / reverse gear according to an embodiment of the present invention.

【図2】中立ブレーキへ供給される作動油圧の上昇に伴
うブレーキ圧力の変化を示すグラフである。
FIG. 2 is a graph showing a change in brake pressure with an increase in operating hydraulic pressure supplied to a neutral brake.

【符号の説明】[Explanation of symbols]

(3) 前後進切換弁 (7) 前進一速クラッチ (8) 前進二速クラッチ (10) 後進クラッチ (13) 油圧調整弁 (14) 緩嵌入弁 (16) 中立ブレーキ (17) 中立ブレーキへの作動油供給通路 (18) 絞り (19) 中立昇圧弁 (20) 中立昇圧弁への分岐油路 (3) Forward / reverse switching valve (7) Forward first speed clutch (8) Forward second speed clutch (10) Reverse clutch (13) Hydraulic pressure adjusting valve (14) Loose fitting valve (16) Neutral brake (17) To neutral brake Hydraulic oil supply passage (18) Throttle (19) Neutral boost valve (20) Branch oil passage to neutral boost valve

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 中立から前進又は後進への切換時に前進
又は後進クラッチへの作動油圧を徐々に上昇させる緩嵌
入弁と、中立時に作動油圧を供給されて出力軸の制動を
行う中立ブレーキと、同じく中立への切換時に作動油を
供給されて上記中立ブレーキへ供給される作動油圧を上
昇させる中立昇圧弁とを備えた減速逆転機の油圧回路に
おいて、前記中立昇圧弁への作動油供給路に絞りを設け
たことを特徴とする舶用減速逆転機の中立ブレーキ装
置。
1. A loose-fitting valve for gradually increasing the operating hydraulic pressure to a forward or reverse clutch when switching from neutral to forward or reverse, and a neutral brake for braking the output shaft when the operating hydraulic pressure is supplied at neutral. Similarly, in a hydraulic circuit of a reduction / reversing machine provided with a neutral booster valve which is supplied with hydraulic oil at the time of switching to neutral and increases a working hydraulic pressure supplied to the neutral brake, a hydraulic oil supply path to the neutral booster valve is provided. Neutral brake device for marine speed reducer / reverse gear characterized by having a throttle.
JP5588192U 1992-07-15 1992-07-15 Neutral brake device for marine reduction / reversing machine Pending JPH0610656U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5588192U JPH0610656U (en) 1992-07-15 1992-07-15 Neutral brake device for marine reduction / reversing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5588192U JPH0610656U (en) 1992-07-15 1992-07-15 Neutral brake device for marine reduction / reversing machine

Publications (1)

Publication Number Publication Date
JPH0610656U true JPH0610656U (en) 1994-02-10

Family

ID=13011445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5588192U Pending JPH0610656U (en) 1992-07-15 1992-07-15 Neutral brake device for marine reduction / reversing machine

Country Status (1)

Country Link
JP (1) JPH0610656U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130512U (en) * 1976-03-26 1977-10-04
JPS52118820A (en) * 1976-03-31 1977-10-05 Masayuki Kurokawa Plate material for construction and its preparation method
JP2016165927A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2016165926A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2016165928A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2018059635A (en) * 2017-12-25 2018-04-12 株式会社クボタ Hydraulic system of work machine
JP2018100029A (en) * 2016-12-21 2018-06-28 株式会社 神崎高級工機製作所 Deceleration reversal device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3081452B2 (en) * 1994-06-01 2000-08-28 ユシロ化学工業株式会社 Water-soluble detergent for aluminum and water-soluble detergent for aluminum to prevent overlapping surface corrosion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3081452B2 (en) * 1994-06-01 2000-08-28 ユシロ化学工業株式会社 Water-soluble detergent for aluminum and water-soluble detergent for aluminum to prevent overlapping surface corrosion

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130512U (en) * 1976-03-26 1977-10-04
JPS52118820A (en) * 1976-03-31 1977-10-05 Masayuki Kurokawa Plate material for construction and its preparation method
JPS5715537B2 (en) * 1976-03-31 1982-03-31
JP2016165927A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2016165926A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2016165928A (en) * 2015-03-09 2016-09-15 ヤンマー株式会社 Reduction reverse gear
JP2018100029A (en) * 2016-12-21 2018-06-28 株式会社 神崎高級工機製作所 Deceleration reversal device
JP2018059635A (en) * 2017-12-25 2018-04-12 株式会社クボタ Hydraulic system of work machine

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